public virtual void Write(Enum value)
{
string enumName = null;
Type type = value.GetType();
if (type.IsDefined(typeof(FlagsAttribute), true) && !Enum.IsDefined(type, value))
{
Enum[] flags = JsonWriter.GetFlagList(type, value);
string[] flagNames = new string[flags.Length];
for (int i = 0; i < flags.Length; i++)
{
flagNames[i] = BTPropertyAttribute.GetPropertyName(flags[i]);
if (String.IsNullOrEmpty(flagNames[i]))
{
flagNames[i] = flags[i].ToString("f");
}
}
enumName = String.Join(", ", flagNames);
}
else
{
enumName = BTPropertyAttribute.GetPropertyName(value);
if (String.IsNullOrEmpty(enumName))
{
enumName = value.ToString("f");
}
}
this.Write(enumName);
}
internal object CoerceType(Type targetType, object value)
{
bool isNullable = TypeCoercionUtility.IsNullable(targetType);
if (value == null)
{
if (!allowNullValueTypes &&
TCU.GetTypeInfo(targetType).IsValueType&&
!isNullable)
{
throw new JsonTypeCoercionException(String.Format(TypeCoercionUtility.ErrorNullValueType, new System.Object[] { targetType.FullName }));
}
return(value);
}
if (isNullable)
{
// nullable types have a real underlying struct
Type[] genericArgs = targetType.GetGenericArguments();
if (genericArgs.Length == 1)
{
targetType = genericArgs[0];
}
}
Type actualType = value.GetType();
if (TCU.GetTypeInfo(targetType).IsAssignableFrom(TCU.GetTypeInfo(actualType)))
{
return(value);
}
if (TCU.GetTypeInfo(targetType).IsEnum)
{
if (value is String)
{
if (!Enum.IsDefined(targetType, value))
{
// if isn't a defined value perhaps it is the JsonName
foreach (FieldInfo field in TCU.GetTypeInfo(targetType).GetFields())
{
string jsonName = BTPropertyAttribute.GetPropertyName(field);
if (((string)value).Equals(jsonName))
{
value = field.Name;
break;
}
}
}
return(Enum.Parse(targetType, (string)value));
}
else
{
value = this.CoerceType(Enum.GetUnderlyingType(targetType), value);
return(Enum.ToObject(targetType, value));
}
}
// Value is of the wrong type and it has been deserialized as an IDictionary.
// Previously coercion was supported
// but this generally just caused more problems than it solved, so type hints are recommended now.
// More specifically this can cause annoying problems with tags when a tag is referencing some object
// for which there is no type info for (e.g the field has been removed), that data would have been
// deserialized as an IDictionary, but when the tag gets the information it will try to coerce it
// which will often fail horribly
if (value is IDictionary)
{
return(null);
// Dictionary<string, MemberInfo> memberMap;
// return this.CoerceType(targetType, (IDictionary)value, out memberMap);
}
if (TCU.GetTypeInfo(typeof(IEnumerable)).IsAssignableFrom(TCU.GetTypeInfo(targetType)) &&
TCU.GetTypeInfo(typeof(IEnumerable)).IsAssignableFrom(TCU.GetTypeInfo(actualType)))
{
return(this.CoerceList(targetType, actualType, (IEnumerable)value));
}
if (value is String)
{
if (Type.Equals(targetType, typeof(DateTime)))
{
DateTime date;
if (DateTime.TryParse(
(string)value,
DateTimeFormatInfo.InvariantInfo,
DateTimeStyles.RoundtripKind | DateTimeStyles.AllowWhiteSpaces | DateTimeStyles.NoCurrentDateDefault,
out date))
{
return(date);
}
}
else if (Type.Equals(targetType, typeof(Guid)))
{
// try-catch is pointless since will throw upon generic conversion
return(new Guid((string)value));
}
else if (Type.Equals(targetType, typeof(Char)))
{
if (((string)value).Length == 1)
{
return(((string)value)[0]);
}
}
else if (Equals(targetType, typeof(Uri)))
{
Uri uri;
if (Uri.TryCreate((string)value, UriKind.RelativeOrAbsolute, out uri))
{
return(uri);
}
}
else if (Type.Equals(targetType, typeof(Version)))
{
// try-catch is pointless since will throw upon generic conversion
return(new Version((string)value));
}
}
else if (Type.Equals(targetType, typeof(TimeSpan)))
{
return(new TimeSpan((long)this.CoerceType(typeof(Int64), value)));
}
#if !WINPHONE_8
TypeConverter converter = TypeDescriptor.GetConverter(targetType);
if (converter.CanConvertFrom(actualType))
{
return(converter.ConvertFrom(value));
}
converter = TypeDescriptor.GetConverter(actualType);
if (converter.CanConvertTo(targetType))
{
return(converter.ConvertTo(value, targetType));
}
#endif
try
{
// fall back to basics
return(Convert.ChangeType(value, targetType));
}
catch (Exception ex)
{
throw new JsonTypeCoercionException(
String.Format("Error converting {0} to {1}", new System.Object[] { value.GetType().FullName, targetType.FullName }), ex);
}
}
/** Creates a member map for the type */
private Dictionary <string, MemberInfo> CreateMemberMap(Type objectType)
{
Dictionary <string, MemberInfo> memberMap;
if (this.MemberMapCache.TryGetValue(objectType, out memberMap))
{
// map was stored in cache
return(memberMap);
}
// create a new map
memberMap = new Dictionary <string, MemberInfo>();
// load properties into property map
Type tp = objectType;
while (tp != null)
{
PropertyInfo[] properties = TCU.GetTypeInfo(tp).GetProperties(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
for (int i = 0; i < properties.Length; i++)
{
PropertyInfo info = properties[i];
if (!info.CanRead || !info.CanWrite)
{
continue;
}
if (BTIgnoreAttribute.IsJsonIgnore(info))
{
continue;
}
string jsonName = BTPropertyAttribute.GetPropertyName(info);
if (String.IsNullOrEmpty(jsonName))
{
memberMap[info.Name] = info;
}
else
{
memberMap[jsonName] = info;
}
}
// load public fields into property map
FieldInfo[] fields = TCU.GetTypeInfo(tp).GetFields(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
foreach (FieldInfo info in fields)
{
if (!info.IsPublic &&
#if WINDOWS_STORE
info.GetCustomAttribute <JsonMemberAttribute>(false) == null
#else
info.GetCustomAttributes(typeof(BTPropertyAttribute), false).Length == 0
#endif
)
{
continue;
}
if (BTIgnoreAttribute.IsJsonIgnore(info))
{
continue;
}
string jsonName = BTPropertyAttribute.GetPropertyName(info);
if (String.IsNullOrEmpty(jsonName))
{
memberMap[info.Name] = info;
}
else
{
memberMap[jsonName] = info;
}
}
tp = tp.BaseType;
}
// store in cache for repeated usage
this.MemberMapCache[objectType] = memberMap;
return(memberMap);
}
public void GetMemberWritingMap(Type objectType, JsonWriterSettings settings, out KeyValuePair <string, FieldInfo>[] outFields, out KeyValuePair <string, PropertyInfo>[] outProps)
{
if (writingMaps == null)
{
writingMaps = new Dictionary <Type, KeyValuePair <KeyValuePair <string, FieldInfo>[], KeyValuePair <string, PropertyInfo>[]> >();
}
KeyValuePair <KeyValuePair <string, FieldInfo>[], KeyValuePair <string, PropertyInfo>[]> pair;
if (writingMaps.TryGetValue(objectType, out pair))
{
outFields = pair.Key;
outProps = pair.Value;
return;
}
bool anonymousType = objectType.IsGenericType && objectType.Name.StartsWith(JsonWriter.AnonymousTypePrefix);
Type tp = objectType;
if (fieldList == null)
{
fieldList = new List <KeyValuePair <string, FieldInfo> >();
}
if (propList == null)
{
propList = new List <KeyValuePair <string, PropertyInfo> >();
}
fieldList.Clear();
propList.Clear();
while (tp != null)
{
FieldInfo[] fields = tp.GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
for (int j = 0; j < fields.Length; j++)
{
FieldInfo field = fields[j];
if (field.IsStatic || (!field.IsPublic && field.GetCustomAttributes(typeof(BTPropertyAttribute), true).Length == 0))
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize " + field.Name + " : not public or is static (and does not have a JsonMember attribute)");
continue;
}
if (settings.IsIgnored(objectType, field, null))
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize " + field.Name + " : ignored by settings");
continue;
}
// use Attributes here to control naming
string fieldName = BTPropertyAttribute.GetPropertyName(field);
if (String.IsNullOrEmpty(fieldName))
{
fieldName = field.Name;
}
fieldList.Add(new KeyValuePair <string, FieldInfo>(fieldName, field));
}
PropertyInfo[] properties = tp.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
for (int j = 0; j < properties.Length; j++)
{
PropertyInfo property = properties[j];
//Console.WriteLine (property.Name);
if (!property.CanRead)
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize "+property.Name+" : cannot read");
continue;
}
if (!property.CanWrite && !anonymousType)
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize "+property.Name+" : cannot write");
continue;
}
if (settings.IsIgnored(objectType, property, null))
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize "+property.Name+" : is ignored by settings");
continue;
}
if (property.GetIndexParameters().Length != 0)
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize "+property.Name+" : is indexed");
continue;
}
// use Attributes here to control naming
string propertyName = BTPropertyAttribute.GetPropertyName(property);
if (String.IsNullOrEmpty(propertyName))
{
propertyName = property.Name;
}
propList.Add(new KeyValuePair <string, PropertyInfo>(propertyName, property));
}
tp = tp.BaseType;
}
outFields = fieldList.ToArray();
outProps = propList.ToArray();
pair = new KeyValuePair <KeyValuePair <string, FieldInfo>[], KeyValuePair <string, PropertyInfo>[]>(outFields, outProps);
writingMaps[objectType] = pair;
}